Metal-planing machine



(No Model.)

G. W. BEAN.

METAL PLANING MACHINE. No. 351,895. Patented Nov. 2, 1886.

Emu-

WITNESSES.

IIVVE/I/TOI? g y 41017 am ATT RNEY I UNITED STATES;

PATENT O FICE.

GEORGE W. BEAN, OF NEW HAVEN, CONNECTICUT.

METAL-PLANING MACHINE.

SPECIFICATION forming part of Letters Patent No. 351,895, dated November2, 1886.

I Application filed September 13,1886. Serial No. 213,443. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE W. BEAN, a

resident of the townof New Haven, in the State of Connecticut, haveinvented new and usefullmprovements in Shipping Mechanism forMetal-Planing Machines, of which the following is a specification.

Myinvention relates to shipping mechanism for metal-planing machines andsimilar recip rocating devices, and has for its object to provide meansfor releasingthe belt-shifter from the reversing mechanism at the end ofits throw, whereby the shifter is made independent of the momentum ofthe planer-bed or.

platen after the belts are in position at each reciprocation of themechanism.

The invention consists in the combination of a disengaging rock-arm witha pair of dogs carried upon the belt-shifter, as hereinafter more fullydescribed and claimed.

In the accompanying'drawings, Figure 1 is a plan view of the cross-headend of a planerframe,showing the driving-pulleys and my improvedshipping mechanism. Fig. 2 is a side elevation of the shippingmechanism, and Fig. 3 is an enlargedview in horizontal section of one ofthe tripping-dogs.

Referring to the drawings, A denotes the bed of a planer of the usualand well-known construction, and b, 6 b and 1) denote thedriving-pulleys, arranged upon a common shaft, 12 which imparts motionto the planertable or platen through the usual train of gears. (Notshown.) The inner wheel on one side of the planer is fast to the shaft,while the opposite inner pulley is a loose one, and

the outer pulleys are also one fastto the shaft and the opposite'oneloose, there being one fast and one loose pulley upon each end of theshaft. The belts run upon the pulleys i-n opposite directions, and abelt-shifter, c, is arranged over the pulleys in suitable bearings inthe planer frame, and carries at each end a belt-guide, d. Thebelt-guides are adjusted at the proper distances apart to hold the beltsrespectively upon one tight pulley and the opposite loose pulley, andvice versa. All these parts are well known, and require no furtherdescription.

A pair of collars or parts, at, are fastened upon the beltshilter c byset-screws or similar planer-table.

devices, which permit the adjustment of the parts as required. To eachof the parts is pivoted a tripping-dog, e, and both dogs are set to triptoward each other, but are prevented.

Upon one of thecross-beams of the planerframe is pivoted'a rock-arm, g,which is vibra'ted by the action of the planer-dogs i at eachreciprocation of the planer-table by means of the ordinaryconnecting-rod, h, and rockshaft k, provided with the exterior andinterior arms, H. The rock-arm carries an adjustable bar or arm, whichisextended to just enter between the tripping-dogs when the belt-shifteris midway of its movement. In operation, as the shifter is movedslightly in either direction from its central position, the bar 1),which moves in an arc, disengages from the tripping-dogs, which move inaright line, and therefore recede from the bar in proportion to theirdistance from the central position. As soon as'the rock-arm isdisengaged from the dogs the movement of the belt-shifter ceases, thoughthe planer-table may be moved somewhat farther by its momentum before itis brought to rest by the action of the oppositelymoving belt. \Vhen thetable is again reversed, the bar on the rock-arm swings past and tipsthe nearest tripping dog, and thus enters between them and engages theopposite dog to shift the movement of the planer-table in. a reversedirection. This operation is repeated at each successive reciprocationof the The dogs can be adjusted 011 the shaft by means of the set-screwsby which they are fastened, and the bar 19 may be adjusted on therock-arm to give any required throw to the belt shifter or to compensatefor wear. By

means of this device the planer may beshipped in much shorter space thanwith the ordinary shipping devices, and the belt-shifter cannot becarried beyond its proper position in either 100 direction by themomentum of the planertable. It is evident that this shipping mech anismmay be used on planers provided with friction-clutches, for which itforms a superior shipping device.

I claim as new and desire to secure by Letters Patent- 1. In shippingmechanism for metal-planing machines, the combination, with a vibratingrock-arm pivoted on the planer-frame and actuated by the movement of theplanerdogs, of a pair of tripping-dogs secured upon the belt-shifter andhaving rectilinear movement, whereby theyare released from engagementwith the rock-arm at certain positions in the path of the point of thearin and disengaged from the action of the planer-bed, as and for thepurpose specified.

2. In combination, the belt-shifter c, supported in hearings in theplaner-bed and adapted to traverse in a rectilinear path, the

tripping-dogs 0, pivoted in their respective holders 11, secured uponthe belt-shifter, the rock-arm g, pivoted on the planer-frame andcarrying an adjustable arm or extension adapted to engage thetripping-dogs, and means for vibrating the rock-arm by the motion of theplaner-bed, substantially as specified.

3. In eombination the belt-shifter c, the tripping-dog's e, the holdersn, the springs f, the rock-arm g, carrying the arm or extension 1;, theconnecting-rod h, the rock-shaft 7c, the rock-arn1s Z Z, and theplaner-dog's i, all combined substantially in the manner and for thepurpose specified.

GEO. \V. BEAN.

\Vitnesses:

J ULIUS TWISS, GEORGE L. Burn-1s.

